Vehicle warranties

Warranty costs are among the largest liabilities a carmaker carries: years of repair obligations on millions of vehicles, estimated from claims data, engineering judgement and the hope that new models prove reliable. The estimates move profits, and the line between a warranty and a service changes when revenue is recognised. This guide distinguishes assurance-type from service-type warranties, works through a provision over three years of claims, and covers extended warranties, supplier recoveries, goodwill repairs, recalls, presentation and US GAAP.

By Mirza Fahad Baig, Chartered Accountant. Reviewed by Hamza Fida, Chartered Accountant. 4 minute read.

Short answer

Vehicle warranties come in two kinds under IFRS. A standard warranty that assures the vehicle works as specified, for a period typical in the market, is an assurance-type warranty: the carmaker recognises a provision under IAS 37 for the expected cost of repairs when it sells the vehicle, based on claims history per vehicle, and charges it to cost of sales. Coverage that gives the customer a service beyond that assurance, such as an extended warranty sold separately, unusually long coverage or free maintenance, is a separate performance obligation: part of the price is deferred and recognised over the coverage period. Expected recoveries from suppliers are recognised only when virtually certain and are not netted against the provision. In this guide's example, 100,000 vehicles with expected warranty costs of US$ 300 each need a provision of 30 million at sale.

At a glance

Standard warranty
IAS 37 provision at sale
Measured
Expected cost per vehicle
Service beyond assurance
Separate performance obligation
Extended warranty
Revenue over coverage period
Supplier recoveries
Asset only if virtually certain
Recalls
Provision when obligation arises
Vehicle warrantiesStandard warranty: IAS 37 provision at sale; Measured: Expected cost per vehicle; Service beyond assurance: Separate performance obligation; Extended warranty: Revenue over coverage period; Supplier recoveries: Asset only if virtually certain; Recalls: Provision when obligation arises.KEY FACTS AT A GLANCEVehicle warrantiesStandard warrantyIAS 37 provision at saleMeasuredExpected cost per vehicleService beyond assuranceSeparate performanceobligationExtended warrantyRevenue over coverageperiodSupplier recoveriesAsset only if virtuallycertainRecallsProvision when obligationarisesTax BakersVehicle warrantiesStandard warranty: IAS 37 provision at sale; Measured: Expected cost per vehicle; Service beyond assurance: Separate performance obligation; Extended warranty: Revenue over coverage period; Supplier recoveries: Asset only if virtually certain; Recalls: Provision when obligation arises.KEY FACTS AT A GLANCEVehicle warrantiesStandard warrantyIAS 37 provision at saleMeasuredExpected cost per vehicleService beyond assuranceSeparate performance obligationExtended warrantyRevenue over coverage periodSupplier recoveriesAsset only if virtually certainRecallsProvision when obligation arisesTax Bakers
Key facts at a glance, as set out in this guide.

Is a vehicle warranty assurance-type or service-type?

IFRS 15 separates warranties that only assure the vehicle complies with agreed specifications from those that also give the customer a service. Factors include whether the warranty is required by law, how long the coverage is compared with what is normal in the market, and what the carmaker promises to do. A three-year warranty in a market where three years is standard is assurance-type. A warranty the customer can buy separately is always a service. Coverage well beyond the market norm, roadside assistance or free scheduled maintenance included in the price are services, so part of the vehicle price is allocated to them. See performance obligations.

Vehicle warranties: building and using the provision

A carmaker sells 100,000 vehicles with a three-year standard warranty. Claims history for similar models shows an expected cost of US$ 300 per vehicle over the warranty period, with 20% of claims in the first year, 35% in the second and 45% in the third. At the time of sale, it recognises a provision of 30 million and an equal cost of sales.

Warranty provision over three years (US$ thousand)Warranty provision over three years (US$ thousand)30,000At sale24,000End of year 113,500End of year 20End of year 3Provision
The provision is used as claims are paid over the warranty period.
US$ millionOpening provisionClaims paidClosing provision
Year 130.0(6.0)24.0
Year 224.0(10.5)13.5
Year 313.5(13.5)0.0

The provision is measured at the best estimate of the cost to settle the obligation, including parts, labour and the dealer's handling fees, and discounted where the effect is material, which matters more for long warranties. If claims run ahead of expectations, for example because of a defective component, the carmaker increases the provision for vehicles already sold and recognises the increase in profit or loss in that period. Estimates are made by model and model year, because a new model has little history.

How are extended warranties accounted for?

An extended warranty sold for US$ 1,200, covering years four and five after the standard warranty expires, is a service: the 1,200 is a contract liability until coverage starts and is then recognised over the 2 years, evenly or in line with the expected pattern of claims if that differs significantly. The costs of repairs under it are expensed as incurred, not provided for, because they relate to a service still being provided. If the contract is expected to cost more than it earns, an onerous contract provision is needed. When a third party underwrites the extended warranty and the carmaker or dealer only sells it, the seller is an agent and recognises a commission. See car dealer revenue.

How are recoveries from suppliers treated?

When a supplier's part is defective, the carmaker can often recover part of the warranty cost from the supplier. IAS 37 recognises a reimbursement only when it is virtually certain to be received, and as a separate asset, not netted against the provision. If the carmaker expects to recover 10% of costs but has no agreement yet, the full provision of 30 million stays and no asset is recognised until the supplier accepts the claim. In profit or loss, the expense can be presented net of the reimbursement once it is recognised. See IAS 37 provisions.

What about goodwill repairs and recalls?

Carmakers often repair faults just outside the warranty period as goodwill. If this is an established practice that customers have come to expect, it creates a constructive obligation, and the expected cost is included in the provision. Recalls and field campaigns to fix safety or emissions defects are provided for when the carmaker has a present obligation, legal or constructive, usually when it decides on or announces the recall, or when a regulator requires it; some carmakers also include an estimate of future campaigns in their warranty provisions based on history. Recalls are covered in a later guide.

How are warranty provisions presented and disclosed?

Warranty provisions are split between current and non-current, with the movements in the year, new provisions, amounts used, changes in estimates, discount unwinding and currency effects, disclosed in the provisions note. Because the estimates are significant, carmakers explain the assumptions and the sensitivity of the provision to claim rates. Suppliers that give warranties to carmakers on their components apply the same principles. See manufacturing warranties.

How does US GAAP differ?

Under US GAAP, standard warranties are accrued when the vehicle is sold under ASC 450 and ASC 460, and extended warranties are deferred and recognised over the coverage period under ASC 606, so the answers are similar. US GAAP requires a table reconciling the warranty liability each year. It also generally does not discount warranty provisions, while IFRS discounts where material. See IAS 37 vs ASC 450 and automotive accounting.

Need help applying the standards?

Our Chartered Accountants help finance teams and students apply IFRS and US GAAP to real transactions.

Questions people ask

How are vehicle warranties accounted for under IFRS?

Standard assurance-type warranties are provided for under IAS 37 at sale; warranties that give a service beyond assurance are separate performance obligations under IFRS 15.

How is a warranty provision measured?

At the best estimate of the cost of repairs on vehicles already sold, based on claims history per vehicle, discounted where material.

Are supplier recoveries netted against the warranty provision?

No. A reimbursement is recognised as a separate asset only when it is virtually certain.

When is an extended warranty recognised as revenue?

Over the coverage period, because it is a service; repair costs under it are expensed as incurred.

Sources

Every fee, date and rule on this page was taken from these official and primary sources.

  1. IFRS Foundation: IAS 37 Provisions, Contingent Liabilities and Contingent Assets
  2. IFRS Foundation: IFRS 15 Revenue from Contracts with Customers

Rules and fees change. If you are reading this long after October 9, 2026, confirm the figures with the source before you rely on them.

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This guide is general information. It is not tax or legal advice for your situation.